U.S. patent application number 17/032222 was filed with the patent office on 2022-03-31 for systems and methods for implementing a dual green-blue light-emitting diode with different wavelengths.
This patent application is currently assigned to Dell Products L.P.. The applicant listed for this patent is Dell Products L.P.. Invention is credited to Yong-Gu KANG, Eunseok KIM.
Application Number | 20220100036 17/032222 |
Document ID | / |
Family ID | 1000005151796 |
Filed Date | 2022-03-31 |
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United States Patent
Application |
20220100036 |
Kind Code |
A1 |
KANG; Yong-Gu ; et
al. |
March 31, 2022 |
SYSTEMS AND METHODS FOR IMPLEMENTING A DUAL GREEN-BLUE
LIGHT-EMITTING DIODE WITH DIFFERENT WAVELENGTHS
Abstract
A dual green-blue light-emitting diode unit may include a first
green-blue light-emitting diode and a second green-blue
light-emitting diode. The first green-blue light-emitting diode may
include a first green diode configured to emit green light at a
first green wavelength, a first blue diode configured to emit blue
light at a first blue wavelength, and a first conformal coating of
red phosphor over the first green diode and the first blue diode.
The second green-blue light-emitting diode may include a second
green diode configured to emit green light at a second green
wavelength different from the first green wavelength, a second blue
diode configured to emit blue light at a second blue wavelength
different from the first blue wavelength, and a second conformal
coating of red phosphor over the second green diode and the second
blue diode.
Inventors: |
KANG; Yong-Gu; (Singapore,
SG) ; KIM; Eunseok; (Singapore, SG) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Dell Products L.P. |
Round Rock |
TX |
US |
|
|
Assignee: |
Dell Products L.P.
Round Rock
TX
|
Family ID: |
1000005151796 |
Appl. No.: |
17/032222 |
Filed: |
September 25, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F 1/133603 20130101;
H01L 33/486 20130101; H01L 25/0753 20130101; H01L 33/505 20130101;
G02F 1/133612 20210101 |
International
Class: |
G02F 1/13357 20060101
G02F001/13357; H01L 25/075 20060101 H01L025/075; H01L 33/48
20060101 H01L033/48; H01L 33/50 20060101 H01L033/50 |
Claims
1. A dual green-blue light-emitting diode unit, comprising: a first
green-blue light-emitting diode comprising: a first green diode
configured to emit green light at a first green wavelength; a first
blue diode configured to emit blue light at a first blue
wavelength; and a first conformal coating of red phosphor over the
first green diode and the first blue diode; and a second green-blue
light-emitting diode comprising: a second green diode configured to
emit green light at a second green wavelength different from the
first green wavelength; a second blue diode configured to emit blue
light at a second blue wavelength different from the first blue
wavelength; and a second conformal coating of red phosphor over the
second green diode and the second blue diode.
2. The dual green-blue light-emitting diode unit of claim 1,
wherein: the first green wavelength is longer than the second green
wavelength; and the first blue wavelength is shorter than the
second blue wavelength.
3. The dual green-blue light-emitting diode unit of claim 1,
wherein the dual green-blue light-emitting diode unit is configured
such that the first green-blue light-emitting diode and the second
green-blue light-emitting diode are selectively enabled and
disabled such that: the first green-blue light-emitting diode is
disabled when the second green-blue light-emitting diode is
enabled; and the second green-blue light-emitting diode is disabled
when the first green-blue light-emitting diode is enabled.
4. A light-emitting diode backlight, comprising: a plurality of
dual green-blue light-emitting diode units, each of the plurality
of dual green-blue light-emitting diode units comprising: a first
green-blue light-emitting diode comprising: a first green diode
configured to emit green light at a first green wavelength; a first
blue diode configured to emit blue light at a first blue
wavelength; and a first conformal coating of red phosphor over the
first green diode and the first blue diode; and a second green-blue
light-emitting diode comprising: a second green diode configured to
emit green light at a second green wavelength different from the
first green wavelength; a second blue diode configured to emit blue
light at a second blue wavelength different from the first blue
wavelength; and a second conformal coating of red phosphor over the
second green diode and the second blue diode.
5. The light-emitting diode backlight of claim 4, wherein: the
first green wavelength is longer than the second green wavelength;
and the first blue wavelength is shorter than the second blue
wavelength.
6. The light-emitting diode backlight of claim 4, wherein each of
the plurality of dual green-blue light-emitting diode units is
configured such that the first green-blue light-emitting diode and
the second green-blue light-emitting diode are selectively enabled
and disabled such that: the first green-blue light-emitting diode
is disabled when the second green-blue light-emitting diode is
enabled; and the second green-blue light-emitting diode is disabled
when the first green-blue light-emitting diode is enabled.
7. A system comprising a display device, the display device
comprising: a liquid crystal display; and a light-emitting diode
backlight, comprising: a plurality of dual green-blue
light-emitting diode units, each of the plurality of dual
green-blue light-emitting diode units comprising: a first
green-blue light-emitting diode comprising: a first green diode
configured to emit green light at a first green wavelength; a first
blue diode configured to emit blue light at a first blue
wavelength; and a first conformal coating of red phosphor over the
first green diode and the first blue diode; and a second green-blue
light-emitting diode comprising: a second green diode configured to
emit green light at a second green wavelength different from the
first green wavelength; a second blue diode configured to emit blue
light at a second blue wavelength different from the first blue
wavelength; and a second conformal coating of red phosphor over the
second green diode and the second blue diode.
8. The system of claim 7, wherein: the first green wavelength is
longer than the second green wavelength; and the first blue
wavelength is shorter than the second blue wavelength.
9. The system of claim 7, further comprising: a first backlight
driver configured to drive the first green-blue light-emitting
diodes of the plurality of dual green-blue light-emitting diode
units; a second backlight driver configured to drive the second
green-blue light-emitting diodes of the plurality of dual
green-blue light-emitting diode units; and a backlight controller
configured to operate in a plurality of modes comprising: a first
mode wherein the backlight controller enables the first backlight
driver to illuminate the first green-blue light-emitting diodes of
the plurality of dual green-blue light-emitting diode units and
disables the second backlight driver; and a second mode wherein the
backlight controller enables the second backlight driver to
illuminate the second green-blue light-emitting diodes of the
plurality of dual green-blue light-emitting diode units and
disables the first backlight driver.
10. The system of claim 7, wherein: the system is an information
handling system; and the system further comprises a processor
communicatively coupled to the display device.
Description
TECHNICAL FIELD
[0001] The present disclosure relates in general to information
handling systems, and more particularly to a dual-chip
light-emitting diode capable of selectively emitting different
wavelengths, for use in a liquid crystal display backlight in an
information handling system or in other applications.
BACKGROUND
[0002] As the value and use of information continues to increase,
individuals and businesses seek additional ways to process and
store information. One option available to users is information
handling systems. An information handling system generally
processes, compiles, stores, and/or communicates information or
data for business, personal, or other purposes thereby allowing
users to take advantage of the value of the information. Because
technology and information handling needs and requirements vary
between different users or applications, information handling
systems may also vary regarding what information is handled, how
the information is handled, how much information is processed,
stored, or communicated, and how quickly and efficiently the
information may be processed, stored, or communicated. The
variations in information handling systems allow for information
handling systems to be general or configured for a specific user or
specific use such as financial transaction processing, airline
reservations, enterprise data storage, or global communications. In
addition, information handling systems may include a variety of
hardware and software components that may be configured to process,
store, and communicate information and may include one or more
computer systems, data storage systems, and networking systems.
[0003] Information handling systems often include display devices,
either communicatively coupled to an information handling system
via a cable or integrated within the information handling system
enclosure itself (e.g., in the case of a notebook or tablet
computer). One popular way of implementing a display device is as a
liquid-crystal display (LCD) illuminated with a light-emitting
diode (LED) backlight. One disadvantage of existing LED-backlit
LCDs is that a color gamut capable of produced by existing
LED-backlit LCDs may not be capable of satisfying multiple color
specifications (e.g., AdobeRGB, DCI-P3), while also maintaining
applicable energy specifications (e.g., EnergyStar).
SUMMARY
[0004] In accordance with the teachings of the present disclosure,
the disadvantages and problems associated with traditional
light-emitting diodes may be reduced or eliminated.
[0005] In accordance with embodiments of the present disclosure, a
dual green-blue light-emitting diode unit may include a first
green-blue light-emitting diode and a second green-blue
light-emitting diode. The first green-blue light-emitting diode may
include a first green diode configured to emit green light at a
first green wavelength, a first blue diode configured to emit blue
light at a first blue wavelength, and a first conformal coating of
red phosphor over the first green diode and the first blue diode.
The second green-blue light-emitting diode may include a second
green diode configured to emit green light at a second green
wavelength different from the first green wavelength, a second blue
diode configured to emit blue light at a second blue wavelength
different from the first blue wavelength, and a second conformal
coating of red phosphor over the second green diode and the second
blue diode.
[0006] In accordance with these and other embodiments of the
present disclosure, a light-emitting diode backlight may include a
plurality of dual green-blue light-emitting diode units. Each of
the plurality of dual green-blue light-emitting diode units may
include a first green-blue light-emitting diode and a second
green-blue light-emitting diode. The first green-blue
light-emitting diode may include a first green diode configured to
emit green light at a first green wavelength, a first blue diode
configured to emit blue light at a first blue wavelength, and a
first conformal coating of red phosphor over the first green diode
and the first blue diode. The second green-blue light-emitting
diode may include a second green diode configured to emit green
light at a second green wavelength different from the first green
wavelength, a second blue diode configured to emit blue light at a
second blue wavelength different from the first blue wavelength,
and a second conformal coating of red phosphor over the second
green diode and the second blue diode.
[0007] A system may include a display device, the display device
comprising a liquid crystal display and a light-emitting diode
backlight. The light-emitting diode backlight may include a
plurality of dual green-blue light-emitting diode units. Each of
the plurality of dual green-blue light-emitting diode units may
include a first green-blue light-emitting diode and a second
green-blue light-emitting diode. The first green-blue
light-emitting diode may include a first green diode configured to
emit green light at a first green wavelength, a first blue diode
configured to emit blue light at a first blue wavelength, and a
first conformal coating of red phosphor over the first green diode
and the first blue diode. The second green-blue light-emitting
diode may include a second green diode configured to emit green
light at a second green wavelength different from the first green
wavelength, a second blue diode configured to emit blue light at a
second blue wavelength different from the first blue wavelength,
and a second conformal coating of red phosphor over the second
green diode and the second blue diode.
[0008] Technical advantages of the present disclosure may be
readily apparent to one skilled in the art from the figures,
description and claims included herein. The objects and advantages
of the embodiments will be realized and achieved at least by the
elements, features, and combinations particularly pointed out in
the claims.
[0009] It is to be understood that both the foregoing general
description and the following detailed description are examples and
explanatory and are not restrictive of the claims set forth in this
disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] A more complete understanding of the present embodiments and
advantages thereof may be acquired by referring to the following
description taken in conjunction with the accompanying drawings, in
which like reference numbers indicate like features, and
wherein:
[0011] FIG. 1 illustrates a block diagram of an example information
handling system, in accordance with certain embodiments of the
present disclosure;
[0012] FIG. 2 illustrates a cross-sectional side-elevation view of
an example dual green-blue light-emitting diode unit, in accordance
with certain embodiments of the present disclosure; and
[0013] FIGS. 3A and 3B illustrate an example backlight and
backlight drivers in different operating modes for the backlight in
accordance with certain embodiments of the present disclosure.
DETAILED DESCRIPTION
[0014] Preferred embodiments and their advantages are best
understood by reference to FIGS. 1 through 3B, wherein like numbers
are used to indicate like and corresponding parts.
[0015] For the purposes of this disclosure, an information handling
system may include any instrumentality or aggregate of
instrumentalities operable to compute, classify, process, transmit,
receive, retrieve, originate, switch, store, display, manifest,
detect, record, reproduce, handle, or utilize any form of
information, intelligence, or data for business, scientific,
control, entertainment, or other purposes. For example, an
information handling system may be a personal computer, a personal
digital assistant (PDA), a consumer electronic device, a network
storage device, or any other suitable device and may vary in size,
shape, performance, functionality, and price. The information
handling system may include memory, one or more processing
resources such as a central processing unit ("CPU") or hardware or
software control logic. Additional components of the information
handling system may include one or more storage devices, one or
more communications ports for communicating with external devices
as well as various input/output ("I/O") devices, such as a
keyboard, a mouse, and a video display. The information handling
system may also include one or more buses operable to transmit
communication between the various hardware components.
[0016] For the purposes of this disclosure, computer-readable media
may include any instrumentality or aggregation of instrumentalities
that may retain data and/or instructions for a period of time.
Computer-readable media may include, without limitation, storage
media such as a direct access storage device (e.g., a hard disk
drive or floppy disk), a sequential access storage device (e.g., a
tape disk drive), compact disk, CD-ROM, DVD, random access memory
(RAM), read-only memory (ROM), electrically erasable programmable
read-only memory (EEPROM), and/or flash memory; as well as
communications media such as wires, optical fibers, microwaves,
radio waves, and other electromagnetic and/or optical carriers;
and/or any combination of the foregoing.
[0017] For the purposes of this disclosure, information handling
resources may broadly refer to any component system, device or
apparatus of an information handling system, including without
limitation processors, service processors, basic input/output
systems (BIOSs), buses, memories, I/O devices and/or interfaces,
storage resources, network interfaces, motherboards, and/or any
other components and/or elements of an information handling
system.
[0018] FIG. 1 illustrates a block diagram of an example information
handling system 102, in accordance with embodiments of the present
disclosure. In some embodiments, information handling system 102
may be a mobile device sized and shaped to be readily transported
and carried on a person of a user of information handling system
102 (e.g., a notebook or laptop computer, etc.). As depicted in
FIG. 1, information handling system 102 may include a processor
103, a memory 104 communicatively coupled to processor 103, a
battery 106, an alternating current (AC) source 107, a power
interface 108, a display 109, and a voltage regulator tree 110.
[0019] Processor 103 may include any system, device, or apparatus
configured to interpret and/or execute program instructions and/or
process data, and may include, without limitation, a
microprocessor, microcontroller, digital signal processor (DSP),
application specific integrated circuit (ASIC), or any other
digital or analog circuitry configured to interpret and/or execute
program instructions and/or process data. In some embodiments,
processor 103 may interpret and/or execute program instructions
and/or process data stored in memory 104 and/or another component
of information handling system 102.
[0020] Memory 104 may be communicatively coupled to processor 103
and may include any system, device, or apparatus configured to
retain program instructions and/or data for a period of time (e.g.,
computer-readable media). Memory 104 may include RAM, EEPROM, a
PCMCIA card, flash memory, magnetic storage, opto-magnetic storage,
or any suitable selection and/or array of volatile or non-volatile
memory that retains data after power to information handling system
102 is turned off.
[0021] Battery 106 may comprise any system, device, or apparatus
configured to store energy which may be used by information
handling system 102 to power components of information handling
system 102 to perform the functionality thereof. In some
embodiments, battery 106 may comprise an electrochemical cell
configured to convert stored chemical energy into electrical
energy.
[0022] AC source 107 may comprise any system, device, or apparatus
configured to provide a direct current (DC) power source derived
from an AC power source (e.g., an AC adapter configured to receive
an AC input and convert such AC input to a DC voltage).
[0023] Power interface 108 may comprise any system, device, or
apparatus configured to serve as an electrical interface between
power sources (e.g., battery 106 and AC source 107) and voltage
regulator tree 110. Accordingly, power interface 108 may include
any suitable combination of connectors, cabling, cabling harnesses,
and/or other components to provide such an electrical interface. In
some embodiments, power interface 108 may be configured to, when an
AC input is present, output a voltage V.sub.PWR which is provided
by AC source 107, and when an AC input is not present, output a
voltage V.sub.PWR which is provided by battery 106, in order to
provide electrical energy to components of information handling
system 102.
[0024] Display 109 may comprise any instrumentality or aggregation
of instrumentalities by which a user may interact with information
handling system 102. For example, display 109 may permit a user to
input data and/or instructions into information handling system
102, and/or otherwise manipulate information handling system 102
and its associated components. Display 109 may also permit
information handling system 102 to communicate data to a user,
e.g., by way of a display device. In some embodiments, display 109
may comprise a touch-screen display. When implemented as a
touch-screen display, display 109 may comprise touch sensor 112,
touch sensor controller 114, liquid crystal display (LCD) 116,
backlight controller 118, LCD controller 120, backlight driver 122,
and backlight 124.
[0025] As known in the art, touch sensor 112 may include any
system, device, or apparatus configured to detect tactile touches
(e.g., by a human finger, a stylus, etc.) on touch sensor 112 and
generate one or more signals indicative of the occurrence of such
touches and/or the locations of such touches on the touch sensor
112. In some embodiments, touch sensor 112 may be a capacitive
touch sensor configured to detect changes in capacitance induced by
tactile touches. In these and other embodiments, touch sensor 112
may be constructed from substantially optically transparent
material and placed over LCD 116 or another display apparatus,
allowing a user to view graphical elements of the touch display
while interacting with touch sensor 112.
[0026] Touch sensor controller 114 may be communicatively coupled
between touch sensor 112 and processor 103, and comprise any
system, device, or apparatus configured to process signals
indicative of touches received from touch sensor 112 and translate
such signals into signals which may be processed by processor 103.
In addition, touch sensor controller 114 may control one or more
operating conditions associated with touch sensor 112, including
the rate of sampling touches, whether touch sensor 112 is powered
on or enabled, and/or other operating conditions.
[0027] LCD 116 may comprise any suitable system, device, or
apparatus configured to display human-perceptible graphical data
and/or alphanumeric data to display 109. As is known in the art,
LCD 116 may include an array of liquid crystals configured to
modulate light generated by backlight 124 in order to create
graphical data and/or alphanumeric data on LCD 116. Although FIG. 1
specifically depicts LCD 116, in some embodiments display 109 may
include a display device other than an LCD.
[0028] Backlight controller 118 may be communicatively coupled
between LCD 116 and processor 103, and comprise any system, device,
or apparatus configured to control operation of backlight 124,
including controlling an intensity of light generated by such
backlight.
[0029] LCD controller 120 may be communicatively coupled between
LCD 116 and processor 103, and may comprise any system, device, or
apparatus configured to, based on graphical data communicated from
processor 103 to LCD controller 120, control individual liquid
crystals of LCD 116 in order to modulate the light generated by
backlight 124, thus creating a display of graphical data and/or
alphanumeric data on LCD 116.
[0030] Backlight driver 122 may comprise any system, device, or
apparatus configured to receive voltage V.sub.PWR from power
interface 108 and condition such voltage to electrically drive
backlight 124.
[0031] Backlight 124 may comprise any system, device, or apparatus
configured to generate light that may be modulated by LCD 116 in
order to generate a display of graphical and/or alphanumeric data.
In some embodiments, backlight 124 may be implemented as a
plurality of light-emitting diodes (LEDs), such as a plurality of
the dual green-blue (GB) LED unit described in further detail below
in reference to FIG. 2, below.
[0032] Voltage regulator tree 110 may comprise any suitable system,
device, or apparatus configured to receive a voltage as an input,
and generate from such voltage one or more regulated output
voltages to power components of information handling system 102
that may have varying input voltage requirements from each other.
Accordingly, voltage regulator tree 110 may include one or more
direct current-to-direct current voltage converters, including
without limitation one or more buck converters, one or more
buck-boost converters, and one or more boost converters.
[0033] In addition to processor 103, memory 104, battery 106,
interface 108, display 109, and voltage regulator tree 110,
information handling system 102 may include one or more other
information handling resources. An information handling resource
may include any component, system, device or apparatus of an
information handling system, including without limitation, a
processor (e.g., processor 103), bus, memory (e.g., memory 104),
I/O device and/or interface, storage resource (e.g., hard disk
drives), network interface, electro-mechanical device (e.g., fan),
display, power supply, and/or any portion thereof.
[0034] FIG. 2 illustrates a cross-sectional side-elevation view of
an example dual GB LED unit 200, in accordance with certain
embodiments of the present disclosure. As shown, dual GB LED unit
200 may include two GB LEDs 202 (e.g., GB LED 202A and 202B) housed
in a housing 210. Each GB LED 202 may include a respective green
diode 204 and blue diode 206 within a respective conformal coating
of red phosphor 208. LEDs 202 may further be covered with a layer
212 of encapsulating material (e.g., silicone).
[0035] Green diode 204A may be fabricated so as to emit green light
at a different wavelength than green light emitted by green diode
204B. In some embodiments, the wavelength of green light emitted by
green diode 204A may be longer than the wavelength of green light
emitted by green diode 204A. For example, green diode 204A may emit
at 535 nm while green diode 204B may emit at 525 nm.
[0036] Similarly, blue diode 206A may be fabricated so as to emit
blue light at a different wavelength than blue light emitted by
blue diode 206B. In some embodiments, the wavelength of blue light
emitted by blue diode 206A may be shorter than the wavelength of
blue light emitted by blue diode 206A. For example, blue diode 206A
may emit at 445 nm while blue diode 206B may emit at 448 nm.
[0037] FIGS. 3A and 3B illustrate an example backlight 124 and
backlight drivers 122 in different operating modes for backlight
124 in accordance with certain embodiments of the present
disclosure. As shown in FIGS. 3A and 3B, a backlight may comprise a
plurality of dual GB LED units 200. For purposes of clarity and
exposition, FIGS. 3A and 3B depict backlight 124 having only two
dual GB LED units 200. However, in actual implementation, backlight
124 may include a larger two-dimensional array of GB LED units
200.
[0038] As shown in FIGS. 3A and 3B, a first backlight driver 122A
may be coupled to and configured to drive GB LEDs 202A of GB LED
units 200 while a second backlight driver 122B may be coupled to
and configured to drive GB LEDs 202B of GB LED units 200. In
operation, backlight controller 118 may be configured to
selectively operate backlight 124 in either of a first mode or a
second mode. In some embodiments, selection of operation in either
of the first mode or second mode may be based on a preference or
setting made by a user of information handling system 102. In the
first mode, backlight controller 118 may enable first backlight
driver 122A and disable second backlight driver 122B such that GB
LEDs 202A may emit light while GB LEDs 202B remain powered off. In
the second mode, backlight controller 118 may enable second
backlight driver 122B and disable second backlight driver 122A such
that GB LEDs 202B may emit light while GB LEDs 202A remain powered
off.
[0039] Accordingly, the systems and methods described herein may
enable a dual GB LED unit 200, and by extension backlight 124 and
display 109, to operate in two different color modes. In some
embodiments, one of such color modes may satisfy a first industry
color specification (e.g., AdobeRGB) while the other of suck color
modes may satisfy a second industry color specification (e.g.,
DCI-P3). Further, the existence of two modes that independently
satisfy different color specifications, may enable a dual GB LED
unit 200, and by extension backlight 124 and display 109, to
operate at a lower energy than that which would be required to
operate in a single mode of operation that satisfies the various
color specifications.
[0040] As used herein, when two or more elements are referred to as
"coupled" to one another, such term indicates that such two or more
elements are in electronic communication or mechanical
communication, as applicable, whether connected indirectly or
directly, with or without intervening elements.
[0041] This disclosure encompasses all changes, substitutions,
variations, alterations, and modifications to the example
embodiments herein that a person having ordinary skill in the art
would comprehend. Similarly, where appropriate, the appended claims
encompass all changes, substitutions, variations, alterations, and
modifications to the example embodiments herein that a person
having ordinary skill in the art would comprehend. Moreover,
reference in the appended claims to an apparatus or system or a
component of an apparatus or system being adapted to, arranged to,
capable of, configured to, enabled to, operable to, or operative to
perform a particular function encompasses that apparatus, system,
or component, whether or not it or that particular function is
activated, turned on, or unlocked, as long as that apparatus,
system, or component is so adapted, arranged, capable, configured,
enabled, operable, or operative. Accordingly, modifications,
additions, or omissions may be made to the systems, apparatuses,
and methods described herein without departing from the scope of
the disclosure. For example, the components of the systems and
apparatuses may be integrated or separated. Moreover, the
operations of the systems and apparatuses disclosed herein may be
performed by more, fewer, or other components and the methods
described may include more, fewer, or other steps. Additionally,
steps may be performed in any suitable order. As used in this
document, "each" refers to each member of a set or each member of a
subset of a set.
[0042] Although exemplary embodiments are illustrated in the
figures and described below, the principles of the present
disclosure may be implemented using any number of techniques,
whether currently known or not. The present disclosure should in no
way be limited to the exemplary implementations and techniques
illustrated in the drawings and described above.
[0043] Unless otherwise specifically noted, articles depicted in
the drawings are not necessarily drawn to scale.
[0044] All examples and conditional language recited herein are
intended for pedagogical objects to aid the reader in understanding
the disclosure and the concepts contributed by the inventor to
furthering the art, and are construed as being without limitation
to such specifically recited examples and conditions. Although
embodiments of the present disclosure have been described in
detail, it should be understood that various changes,
substitutions, and alterations could be made hereto without
departing from the spirit and scope of the disclosure.
[0045] Although specific advantages have been enumerated above,
various embodiments may include some, none, or all of the
enumerated advantages. Additionally, other technical advantages may
become readily apparent to one of ordinary skill in the art after
review of the foregoing figures and description.
[0046] To aid the Patent Office and any readers of any patent
issued on this application in interpreting the claims appended
hereto, applicants wish to note that they do not intend any of the
appended claims or claim elements to invoke 35 U.S.C. .sctn. 112(f)
unless the words "means for" or "step for" are explicitly used in
the particular claim.
* * * * *